Tire for vehicle-wheels.



J. CAIRNS.

nm: FOR VEHICLE WHEELS.

APPLICATION FILED MAY 23, I910- Patented June 15, 1915.

\ 5] mm wtoz 351 Momma-1 9 I l I rAIIA THE NORRIS PETERS C0, PHOWLITHO"WASHINGTON.,D. C.

JOHN CAIRNS, OF WILL-ENI-IALL, SOUTH STAFFS, ENGLAND.

TIRE non VEHICLE-WHEELS.

niaaioz.

Specification of Letters Patent.

Patented June as, 1915.

Application filed May 23, 1910. Serial No. 562,889.

To aZZ whom it may concern Be it known that I, JOHN CAIRNS, of BurnabyTerrace, WValsall Road, VVillenhall, South Staffs, England, mechanic,have invented certain new and useful Tires for VehicleWVheels, of whichthe following is a specification. r

This invention relates to that class of tire for wheels of vehicles inwhich the elastic studs can be taken out and replaced in a few secondswithout taking oil the rim of the wheel proper when renewing orrepairing.

According to my invention I now propose to have a metal band with aninward flange 011 each side and recesses cut in order to retainanelastic stud. These studsare made of rubber or any othersuitable elasticmaterial having an oblong or spheroidal hollow recess on their innerside to contain air when placed in the metal band, the outward portionof the rubber to be made oblong to fit over the outside of the metalband andto be made male and female, that is to say, with alternateprojection and recess formed in the direction of the run of the wheel inorder to interlock the studs together and to prevent them from comingout in case of a side slip.

For heavy wood wheels I purpose having a double flanged metal rim of Hshape, one portion of the band is designed to lock the telly of thewheel, and the other portion to retain the inwardly flanged metal bandsuitably attached to the wheel with bolts, ready to take elastic studs,these studs to be fitted in position from the top side. This doubleflanged metal rim of H-shape can be made with recesses cut therein toretain elastic studs without the aid of an inwardly flanged band.

In the case of a metal wheel I use the top portion of the wheel as ametal band and would cut recesses in it to retain elastic studs withoutthe aid of bolts, rivets, or the like.

In order that my invention may be properly understood and readilycarried into effect, I have hereunto appended seven sheets of drawings,of which Figures 1 and 2 are cross sections, respectively, showing adouble'flanged metal rim and inward flanged metal band bolted to woodenfelly with stud attached. Fig. 3 is a cross section of a double row ofstuds of a motor car or other vehicle showing double flanged metal rimand inner band of a back wheel. Fig. 4 is a cross section of a heavyvehicle back wheel with a triple row of and female with a canvas on itsunderside;

and Fig. 6 is an end view of the same.

As shown in the drawings, reference being had to Figs. 1 and 2, I haveprovided a wheel rim A on the outer periphery of which there is locatedan annular plate B having a crosssection shaped like the letter H, andfitting over the outer periphery of the wheel rim A in such a mannerthat two of the flanges of the plate B extend downwardly over the edgeof the said rim. The plate B is adapted to be held in place by means ofbolts F. Within the groove formed upon the outer face of the plate B Ihave provided a metal band 0 having inwardly directed flanges to restagainst the base of the plate B and havv1ng a plurality of circularopenings to receive hollow studs E. Each of the studs E has at one sidea recess G and at the other side a projection G so that the adjacentprojections and recesses in the hollow studs E will register with oneanother, to interlock the various studs together. The metal band C andits attached studs E are held in place by a plurality of bolts F.

In the modification of my invention shown in Fig. 8, the construction isthe same as the construction already described in the form of myinvention shown in Figs. 1 and 2, except that in this modification of myinvention a heavier rim A is provided for sup porting heavier loads, andis therefore made broader, while the attached parts are also madebroader and of sufficient width to support two rows of studs E placedside by side but in staggered position. In this instance, there isprovided a wider plate B in the shape of the letter H, which is clampedin place by the bolts F, and which is designed to receive a metal band Chaving openings properly placed to receive rubber studs E.

In the modification of my invention shown in Fig. 4:, theconstruction isthe same as in Fig. 3, except that in this form of my invention a rim A"is provided of eXtra width for sustaining very heavy loads, while thesame is provided with a plate B in the shape of the letter H whichreceives a metal band C provided with three rows of openings to receivethree rows of studs E, which are staggered in the same manner asreferred to in connection with Fig. 3. In this form scription, that allof the forms of the invention present the common novel features of of myinvention a series of central studs E may be provided which are slightlymore.

elevated than the two outside linesof V studs E.

The construction of a particular stud is shown in Figs. 5 and 6 in whicheach of the studs E is shown to have a central cavity or opening H,while one end of the stud is provided as already described with aprojection G, while the other end of the stud has a recess G.

It will be obvious from the foregoing dehollow resilient studs havingtheir open base portions closed by the wall of the annular recess formedin the felly of the wheel, or-

attached thereto, so that upon compression under a load, the airretained in the hollow studs'will resist deformation. It will be seenthat all of the studs engage the lateral side flanges of the felly andalso engage the outer face of the inverted holding bands through theopenings of. which theredu'ced base portions of the studs project. Thestuds are all provided with annular recesses fitting the inner walls. ofthe openings and with reduced base portions engaging, not

only the inner face of the band, but also the lower wall of the annularrecess of the wheel. By reference to any of the sectional views it willbe seen that upon compression of the studs, the lower open ends will beforced against the inner wall of the wheel recess so as to close suchopen base portions Copies of this patent may be obtained for andtherefore retain the air tocushion and support the studs againstreformation. The V interfitting parts of the studs, male and a female,serve as an additional holding means stud receiving openings, and hollowresilient studs open at their bases and having body portions engagingsaid side flanges and seated on the outer faces of saidband, said studshaving recessed portions engaging the inner edges of the openings insaid band and reduced base portions engaging the inner face of said bandand seated on the wall of said' l recess-with the lower open portions ofthe bases closed by said'recess wall, whereby compression of the studserves to close the same against dischargeof air to resist deformation.g

In testlmony whereof I afiix my slgnature 1n presence of two witnesses.

V Witnesses ETI-IEL M. WEBB, H KATHLEEN M. THOMPSON.

JOHN carers:

five cents each, by addressing the Commissioner of Patents, 7Washington, 11. 0.

